Acute Interstitial Nephritis Induced by Clozapine
Praveena Vantipalli1, Sasmit Roy2, Narayana M Koduri3
1Department of Family Medicine, University of Nebraska Medical Center, Omaha, NE, USA.
Journal of Medical Cases
|August 11, 2022
Summary
Clozapine can cause acute interstitial nephritis (AIN), a kidney injury, even at low doses. Early detection and drug withdrawal are crucial for preventing severe kidney damage.
Area of Science:
- Nephrology
- Psychiatry
- Pharmacology
Background:
- Acute interstitial nephritis (AIN) is a kidney disease often caused by medications.
- Drug-induced AIN is not dose-dependent and can recur upon re-exposure.
Observation:
- A 50-year-old male with treatment-resistant schizoaffective disorder developed clozapine-induced AIN.
- Kidney function improved after clozapine withdrawal and steroid treatment.
- Re-exposure to a lower dose of clozapine a year later caused significant kidney impairment.
Findings:
- Clozapine can induce AIN, confirmed by kidney biopsy.
- AIN recurrence occurred upon rechallenge with clozapine, even at a lower dose.
- Discontinuation of clozapine led to kidney function recovery.
Implications:
- Monitoring kidney function in patients taking clozapine is essential.
- Prompt diagnosis and removal of the offending drug can prevent acute kidney injury.
- This case highlights the importance of considering clozapine as a potential cause of AIN in psychiatric patients.
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